3985285 has 4 divisors (see below), whose sum is σ = 4782348. Its totient is φ = 3188224.

The previous prime is 3985277. The next prime is 3985297. The reversal of 3985285 is 5825893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5825893 = 443 ⋅13151.

It can be written as a sum of positive squares in 2 ways, for example, as 2390116 + 1595169 = 1546^2 + 1263^2 .

It is a cyclic number.

It is not a de Polignac number, because 3985285 - 2³ = 3985277 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398524 + ... + 398533.

It is an arithmetic number, because the mean of its divisors is an integer number (1195587).

Almost surely, 2^3985285 is an apocalyptic number.

It is an amenable number.

3985285 is a deficient number, since it is larger than the sum of its proper divisors (797063).

3985285 is an equidigital number, since it uses as much as digits as its factorization.

3985285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797062.

The product of its digits is 86400, while the sum is 40.

The square root of 3985285 is about 1996.3178604621. The cubic root of 3985285 is about 158.5452109580.

The spelling of 3985285 in words is "three million, nine hundred eighty-five thousand, two hundred eighty-five".